Originally Posted by
Sidnne
I will be very angry if Naruto's new technique involves Rasengan. I think we have seen enough variations of Rasengan to last us for the remainder of the manga. I want to see a new technique completely unrelated to Rasengan.
I would love to see Naruto be able to do Hiraishin no Jutsu. It would be extremely effective in Naruto's arsenal since his Kage Bunshins would allow him practically unlimited seals with which to teleport.
Kakashi saying that this could only be done by Naruto would likely not be referring to the technique itself, but the training. If Kakashi is going to use Mangekyou to train Naruto at an excellerated pace, he would be relying on the regenerative properties of the Kyuubi chakra to have Naruto survive it.